Car-heating system.



F. F. GOGGIN.

GAB. HEATING SYSTEM. APPLICATION FILED Imus, 1908.

Patented Apr. 23, 1912.

' INVENTOR l g 2/ Att y Y FEE git rrnur FRANK F. COGG-IN, ($33" NEW 1&Z1, ASEEGNQS) o assassin? (JG'MFANY, (3F 2033 1, N. iii, A CGE-PQELJEEQHEEABTELIG SYSTEM,

To aZZ whom it may concern;

Be itknown that I, FRANK a citizen-otthe United States, residing- NewYork, in the county of New York ant State of ETQVJ York, have inventednew and F. Coociu ten 3, tion.

My invention relates to systems. and more particularly to a adapted forheating cars in railway ,in mjv prior Patents h'os. 66%,076 and.783,422, ranted respectively oniiec. 1900 and Feb. 28, 1-905, Ihavedisclose" a heating system wherein from the air pump emp id tocompress airfor the-fluid pressure res, is utilized for heating the carsin the train.

It sometimes happens, .should the steam pressure in the locomotiveboiler become low,

of which the following is a y ,,.i esiiausi steam that the back pressureof the exhaust steam,

' which is necessarily caused by its use in the heating system, issufficient to cause pump to no rly or quite stop running, and,

as a consequence, the .fiuid pressure in the main reservoir may becomelower than desir-able. To obviate this ditlicult'y, means an provided,according to the second patent above mentioned, for automaticallyopening a free exhaust to the atmosphere from the pump exhaust, when themain reservoir pressure -falls below a predetermined degree,thusrelieving the pump of the hack pressure of the exhaust steam andthereby insuring the full operation of the pump to maintain the desiredpressure in the main reservo1r. With this prior construction, however,in order to again connect the heating-system with the exhaust steamsupply, itis necessary for the engineer to operate the controlline;valve by hand.

It is the main object of my present invention, therefore, to provide asimplified construction of this character wherein the conequipment forutilizing the exhaust steam from the air pump for heating the ears,

illustrating one form of my present invention applied thereto; and Fig.2 a vertical section1of a valve device, embodying one form oi myinvention for controlling the Specification of Letters Patent.

Application flied February 15, 1988. Serial 41435375.

the pump and for presteam from the heating exhaust steam from ventinghack ticw of system.

According to Fig. 1 of the drawing, the car heating apparatus utilizesthe erthaust steam from air pump 1, oi'the usual n KSiijfigJiTI-OH rorcompressingair for use in the prince system, 1 air cylinder 3 of thepump being" connected hy a pipe 2 with a. main reservoir 4,'and havingthe'usuai pumpgovernor for controlling the steam siipply to the steamcylinder 3 of the pump through the steam pipe *4, the governor beingsubjdct to main reservoir pressiu'e oy Way of the pipe 8.

The steam exhaust pipe from the pump is connected by a pipe 10 with areevap o- .ating drum, 11., from which is suplled to heat the cars ofthe train? 1 similar to that disclosed in my prior pat-' ents abovementioned. According to. one construction of my present invention Ipro-'vide a valve device 16 for controlling an atmospheric exhaust from thepump exhaust pipe'9 and said device may comprise a valve 17, operated bya piston 18, subject on one side to the pressure of a spring 19 and onthe opposite side to fluid pressure from the main reservoir at certaintimes. Said piston. being connected by'a pipe 20 to a pressure governor2l,'which may he of the ordinary construction, having a diaphragm 22,subj ect on one side to the pressureof an adjustahle spring 23 and onthe opposite side to main reservoir pressure by ivay of the pipe 24-.The diaphragm 22 governs a valve 25 which controls the admission of airfrom the main reservoir to the piston 18 of thee haust valve 1'2.

In operation, the pressure governor 21 is a s,- as, ieie;

The pe, 1G connected to a relief A ipe 12 inpressure isadjusted to thedesired minimum degree of 11a main reservoir pressure, so that abovethat pressure the valve 25 is open and air is supplied front the mainreservoir to the piston P 18, causing the same to close the valve 1'? :5against the pressure of the spring 19.. The exhaust to the atmosphere isthus cut off, and the air pump l operates, the exhaust steam therefromflows through the pipe to the reevaporating drum 1,1, whence the insteam is supplied for heating the cars.

tihould the boiler steam pressure happen to tail to a low point, so thatthe back pressure of the exhaust steam interferes with the full actionof the pump or even causes the same to stop, the main reservoir pressure may also fali,-but since the pressure governor closes the valve 25as soon as the main reservoir pressure becomes reduced to a certainpoint, the fluid pressure in the pipe and on piston 18 reduces throughthe usual small vent port 85, so that said piston18 is shifted by thespring 19, open ing the exhaust valve 17 and permitting the pump steamexhaust to go to the atn'iosphere. The back pressure on the pump is thusrelieved, and the pump at once starts into full action. The mainreservoir pressure is thus brought up to the desired degree at which thepressure governor 21 is adjusted and thereupon causes the valve 25 toopen and admit fluid to the piston 18, which then operates to close theexhaust valve 17. The exhaust steam is then diverted to the pipe 10 andthe drum 11. Should the pressure of the exhaust steam rise above thedegree at which the relief valve 13 is adjusted, the excess pressure isblown-oil, and iitthe pressure becomes less than the desired minimumdegree then the pressure regulator 15 opens and admits live steam to theheating system.

When the exhaust valve 17 is open and the exhaust steam is passing tothe atmosphere, in order to prevent the back flow of steam from theheating drum to the atmosphere, I. provide, according to theconstruction illustrated in Fig. 1., a valve device 26 which comprises avalve 2! for controlling communication trom the heating drum to 1 thepump exhaust pipe, and a piston 28 for operating said valve. Due side ofthe piston 23 is connected by a'pipe 29 with the pump exhaust outletbeyond the valve 17, and thus, when the valve 1'? is open and the pumpis exhausting to the atmosphere, exhaust steam flows through the pipe 29to the upper vside of the piston 28, thus operating the piston to closethe valve 27, so that the steam in the heatlng drum 11 is prevented fromflowing hack through the pipe 10 and escaping to the atmosphere.

In the construction illustrated in Fig. 2, I provide a valve device 30comprising a double seated valve 31', adapted in one extreme position toclose communication between the atmospheric exhaust and the exhaust pipe9 and open communication from the pipe 9 to-the pipe 10, leading to theheating drum, and in the other extreme po- 7o sition to cut off the pipe10 and open the atmospheric exhaust. The valve 31 may be operated by apiston 82, subject on one side to the pressure of a spring 3% and on theopposite side to main reservoir pressure through the pipe 20, when thevalve 25 is open. With this construction it. will be seen that so longas the piston 32- is exposed to main reservoir pressure, the same Willbe maintained in its outer posit-ion With the valve 31 30 closingtheatmospheric exhaust and maintaining communication open from the pumpexhaust pipe 9 to the heating system supply pipe 10, but when the mainreservoir pressure falls below the predetermined minimum degree the mainreservoir pressure being out ch from the piston '32, the spring 34shifts the piston and valve 31 to the inner position,

in which the heating supply pipe 10 is cut oii and the atmosphericexhaust is open, thus the valve device 30 performs the functions of bothof the valve devices 16 and 26.

It will now be apparent that in pres entinvention I'have providedautomatic means for controlling the exhaust steam heating system,requiring no attention on the part of the engineer, in the ordinary operation thereof.

Having now described my invention, What I claim as new and desire tosecure by Letters Patent is 1. In a car heating system the combinationwith a steam actuated air pump having an exhaust outlet to theatmosphere and a communication for supplying exhaust steam to theheating system, of valve mechanism governed by the pump pressure forautomatically closing the atmospheric exhaust outlet, and operating'toopen the exhaust outlet to the atmosphere and to positively close saidcommunication to the heating system when the pump pressure falls to apredetermined point.

2. In a car heating system the combination with a steam actuated airpump having an outlet to the atmosphere for exhaust steam, and acommunication for supplying exhaust steam to the heating system, of avalve device governed by the pump pres sure for opening and closing saidexhaust outlet to the atmosphere, and means governed by the flow ofexhaust steam to the atmosphere for closing said communication to theheating system.

3. in a car heating system the combina tion With a source of exhauststeam,,an atmosphere outlet therefor, and means of communication fromsaid source to the heating system, of a valve device governed by thepump pressure for opening and closing 1 an atmospheric exhaust outlet, areservoir into which said pump is adapted to'comof pressure in thereservoir for actuating said valve, and means operated by the flow orexhaust steam through said valve to the atmospheretor controllingcommunication from the exhaust steam outlet of-the pump to the heat ngsystem. g a

5. In a. car'heating system, the combination with a steam actuated-airpump having press air, and means for supplying exhaust steam from thepump to the heating sys-' tom, of a valve for controllingcommunication'from the exhaust steam outlet of the pump to theatmosphere, a movable abut ment operated by the reduction in reservoirpressure to a predetermined degree for 'voir into which said pumpcompresses air,

opening said valve, and means operated by the How of exhaust steamthrough said valve to the atmosphere for closingcommunication from theexhaust steamoutlet of the pump to the heating system. 1 1112. carheating system, the combina-. tion with: a steam actuated air pumphaving an exhaust steain outlct-to the atmosphere, 'areservohinto whichsaid pump is adapted to-com 'iress'air, andmeans for supplying exhauststeam from the pump to the heating system, of valve means forcontrolling the flow of exhaust steam from the pump to the atmosphereand to the heating system, a movable abutment for controlling the actionof said valve means, a spring acting on one side of said abutmenttcndmgto move samein one direction, and means subjectto reservoir pressure forcontrolling the admission of fluid pressure to the opposite side of saidabutment.'

7. In a car heating system, the combinationwith a steam actuated airpump having an atmospheric exhaust steam outlet, a reserand a supplypipe for the heating system "tion through which exhaust steam connectedto the steam exhaust. from the pump, of automaticmeans operated'according to the degree of reservoir pressure for establishingcoiiin'iunication from the steam exhaust-pf the pump to said supply pipeand adapted upon vthe reservoir pressure falling toa predetermineddegree to close said communication and open the pump'exhaust to theatmosphere.

8. Ina car heating system, the combination with a sourceof exhauststeam, a pipe 1 adapted to establish comn'iunication fromsaid source tothe atmosphere, and a supply pipe leading from the source of exhauststeam to the heating system, of a valve' device operating independentlyof the exhaust steam pressure for controlling communicationvth'roughsaid atmospheric exhaust pipe and fmeans operated by the flow ofexhaust.

steam-upon-the opening of the atmospheric exhaust outlet for closing thecommunicais supplied to the heating system.

9. The combination with a steam opera-ted ail-brake system, and a steamoperated train heating system adapted tobe brought into communicationwith and supplied by the exhaust steam from the said air brake systein,the said steam exhaust being open to an atmosphere oflower pressure thaithat 'within the said steam heating system, of

llltlliS whereby the communication between they said systems isautomatically e'liected' and broken as the air pressureiof the said airbrake system rises-and falls, respectively.

10. T he combination of. a steam operated air brake system and a steamoperated train heating system adapted to be brought into communicationwith and supplied by'the exhaust steam from the said air brake systom,the said steam exhaust also being open to the atmosphere, an automaticvalve adapted to open and close the exhaust to the atn'iosphere when theair pressure within said air brake system falls below or rises above acertain predetermined degree, respectively, and an automatic .valvegoverning the said communication between the two systems, saidlast'named-valve adapted to open when the first named valve closes andto close when the first named valve opens.

In testimony whereof I have hereunto set my hand and seal.

FRANK F. COGGIN. [1,. s] Witnesses:

M. J. SHERIDAN, FRANCIS .CONDON.

